Cretaceous-Paleogene Extinction Event

The Cretaceous-Paleogene Extinction was the 5th of six mass extinctions on earth, as well as the 2nd worst of all. This happened around 67-64 million years ago, especially 65 million years ago. This event was devastating. It caused the demise of all dinosaurs and all Ammonites, which had thrived for around 150 million years. This also caused some corals, trees and plants to go extinct as well. Due to the extinction of the dinosaurs, this event was helpful, however, for the mammals, which then came to dominance in the Paleogene Period.